Motorola Droid X 4.5.621
Things that you should know before you update to this release......
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1] You will lose root.
2] The root exploit found in 596, 602, 605 has been patched.
3] This update and/or SBF is NOT PRE-ROOTED4]YOU WILL NOT BE ABLE TO SBF TO AN EARLIER VERSION AFTER YOU FLASH THIS UPDATE **YOU HAVE BEEN WARNED**

ROOT
Backup root using Voodoo OTA Rootkeeper
>The apk and directions can be found with a quick search using google.
>Use this app before you flash to backup your SU.
>Use this app after you flash to restore root.

Droid3 & Droid4 & Razor root methods will FAIL!! There may be others ways (I have not tested any) to obtain root if Rootkeeper fails.

*There is no reports of successful rooting of this update once applied*

Update Errors
Status 7
>The update checks the integrity of /system on the device. If you deleted ANY Files then you may receive the above error.

This is a sample of what could cause a failed Flashany changes to /system regardless of what they aredeodexed apk's and framework-resusing cheesecake.apkmodified bootanimationmodified bootanimation locationinstalled/removed apps to /system/appmodified the bootlogo.bininstalled/changed fonts-- This is not a complete list.........

Thanks for this! I'm really sad that I don't think many developers will be updating their awesome tweaks to work with the new build it seems. It is kind of crazy to see developers leave a phone before Motorola abandons it. I hope I'm wrong. I'm going to hold off because I think I may need SBF support if I ever hope to see 2nd init partial ICS goodness working. I'm hoping the cyanogen team can implement the new fixes in a way to avoid this stock update.

PS. I am really sorry to hear about what happened to your DX cdexsw. I hope the DX2 will be good to you.

Updating multiple Bionics with p3droid pathsaver recently gave me a similar Bootloader error. Flashing the boot.img in fastboot as noted in post 3 by realbbb HERE cleared those each time and allowed me to continue with the pathsaver process.

Just recently got my DroidX working again (broken vol- button, had to find it and pop it open) so I don't know if there is a way to pull the equivalent "boot.img" file(s) for X sbf's. I do know the Bionic uses fxz vice sbf but I thought this may give someone with more knowledge a starting point.

I guess our phones are really old and almost abandoned developement wise now. 8( I'm still debating if I'll update or not. Our phones have been running the best they ever were, and I'd hate to muck that up.